Add 21/84 and 2/27
21/84 + 2/27 is 35/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
21/84 = 21 × 9/84 × 9 = 189/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
2/27 = 2 × 28/27 × 28 = 56/756 - Add the two like fractions:
189/756 + 56/756 = 189 + 56/756 = 245/756 - 245/756 simplified gives 35/108
- So, 21/84 + 2/27 = 35/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84+2/27 21/84+4/27 21/84+2/54 63/84+2/27 21/84+6/27 21/84+2/81 21/84+10/27 21/84+14/27